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WO2002012732A3 - Hydraulic control valve system with pressure compensated flow control - Google Patents

Hydraulic control valve system with pressure compensated flow control Download PDF

Info

Publication number
WO2002012732A3
WO2002012732A3 PCT/US2001/023382 US0123382W WO0212732A3 WO 2002012732 A3 WO2002012732 A3 WO 2002012732A3 US 0123382 W US0123382 W US 0123382W WO 0212732 A3 WO0212732 A3 WO 0212732A3
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
valve
pump
margin
valve system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2001/023382
Other languages
French (fr)
Other versions
WO2002012732A2 (en
Inventor
Dennis R Barber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Husco International Inc
Original Assignee
Husco International Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Husco International Inc filed Critical Husco International Inc
Priority to BRPI0113127-3A priority Critical patent/BR0113127B1/en
Priority to AU2001277166A priority patent/AU2001277166A1/en
Priority to JP2002517985A priority patent/JP3916559B2/en
Priority to EP01954954A priority patent/EP1354141B1/en
Priority to DE60105849T priority patent/DE60105849T2/en
Publication of WO2002012732A2 publication Critical patent/WO2002012732A2/en
Anticipated expiration legal-status Critical
Publication of WO2002012732A3 publication Critical patent/WO2002012732A3/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/163—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for sharing the pump output equally amongst users or groups of users, e.g. using anti-saturation, pressure compensation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D31/00—Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution
    • F16D31/02—Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution using pumps with pistons or plungers working in cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • F15B2211/3053—In combination with a pressure compensating valve
    • F15B2211/30555—Inlet and outlet of the pressure compensating valve being connected to the directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/351—Flow control by regulating means in feed line, i.e. meter-in control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/57—Control of a differential pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6055—Load sensing circuits having valve means between output member and the load sensing circuit using pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7135—Combinations of output members of different types, e.g. single-acting cylinders with rotary motors

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

An assembly of valves (12) controls hydraulic fluid flowing to several hydraulic actuators (20,21,22) from a variable displacement pump (18) that produces an output pressure equal to a control input pressure plus a predefined margin pressure. The control input pressure is a function of the greatest load pressure at the hydraulic actuators. Each valve (18,14,15) has an associated pressure compensating valve (48) which regulates the pressure differential across a metering orifice of each valve to a predefined level, usually the pump's margin pressure. A flow regulator (70) is associated with at least one of the valves (15) and reduces the output pressure from the pump to produce a reduced pressure that controls the associated pressure compensating valve. Operation of the flow regulator causes the pressure differential across a metering orifice of the associated valve to be less than the pump's margin pressure thus allowing adjustment of the fluid flow.
PCT/US2001/023382 2000-08-08 2001-07-25 Hydraulic control valve system with pressure compensated flow control Ceased WO2002012732A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BRPI0113127-3A BR0113127B1 (en) 2000-08-08 2001-07-25 flow compensator in a hydraulic system.
AU2001277166A AU2001277166A1 (en) 2000-08-08 2001-07-25 Hydraulic control valve system with pressure compensated flow control
JP2002517985A JP3916559B2 (en) 2000-08-08 2001-07-25 Hydraulic control valve system with pressure compensated flow control device
EP01954954A EP1354141B1 (en) 2000-08-08 2001-07-25 Hydraulic control valve system with pressure compensated flow control
DE60105849T DE60105849T2 (en) 2000-08-08 2001-07-25 HYDRAULIC VALVE SYSTEM WITH PRINTED CARRIER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/635,187 US6318079B1 (en) 2000-08-08 2000-08-08 Hydraulic control valve system with pressure compensated flow control
US09/635,187 2000-08-08

Publications (2)

Publication Number Publication Date
WO2002012732A2 WO2002012732A2 (en) 2002-02-14
WO2002012732A3 true WO2002012732A3 (en) 2003-08-07

Family

ID=24546807

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/023382 Ceased WO2002012732A2 (en) 2000-08-08 2001-07-25 Hydraulic control valve system with pressure compensated flow control

Country Status (8)

Country Link
US (1) US6318079B1 (en)
EP (1) EP1354141B1 (en)
JP (1) JP3916559B2 (en)
CN (1) CN1265101C (en)
AU (1) AU2001277166A1 (en)
BR (1) BR0113127B1 (en)
DE (1) DE60105849T2 (en)
WO (1) WO2002012732A2 (en)

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DE10219718B4 (en) * 2002-05-02 2007-06-06 Sauer-Danfoss Aps Hydraulic valve arrangement
DE10219717B3 (en) * 2002-05-02 2004-02-05 Sauer-Danfoss (Nordborg) A/S Hydraulic valve arrangement
DE10219719A1 (en) * 2002-05-02 2003-11-27 Sauer Danfoss Nordborg As Nord Hydraulic valve arrangement
US6895852B2 (en) * 2003-05-02 2005-05-24 Husco International, Inc. Apparatus and method for providing reduced hydraulic flow to a plurality of actuatable devices in a pressure compensated hydraulic system
SE526764C2 (en) * 2003-10-22 2005-11-01 Nordhydraulic Ab Hydraulic directional valve
DE102005022275A1 (en) * 2004-07-22 2006-02-16 Bosch Rexroth Aktiengesellschaft Hydraulic control arrangement
JP4081487B2 (en) * 2004-12-28 2008-04-23 東芝機械株式会社 Hydraulic control valve
US7302797B2 (en) * 2005-05-31 2007-12-04 Caterpillar Inc. Hydraulic system having a post-pressure compensator
US7222484B1 (en) * 2006-03-03 2007-05-29 Husco International, Inc. Hydraulic system with multiple pressure relief levels
DE102006060333B3 (en) * 2006-12-20 2008-08-21 Sauer-Danfoss Aps Hydraulic valve arrangement
DE102006060326B4 (en) * 2006-12-20 2008-11-27 Sauer-Danfoss Aps Hydraulic valve arrangement
US7818966B2 (en) * 2008-01-09 2010-10-26 Husco International, Inc. Hydraulic control valve system with isolated pressure compensation
US8091355B2 (en) * 2008-10-23 2012-01-10 Clark Equipment Company Flow compensated restrictive orifice for overrunning load protection
US8113033B2 (en) * 2009-06-08 2012-02-14 Cnh America Llc Method to calibrate a flow balance valve on a windrower draper header
US8430016B2 (en) * 2009-06-09 2013-04-30 Husco International, Inc. Control valve assembly with a workport pressure regulating device
US8353157B2 (en) * 2009-08-06 2013-01-15 Cnh America Llc Open center hydraulic system
KR101859631B1 (en) * 2010-05-11 2018-06-27 파커-한니핀 코포레이션 Pressure compensated hydraulic system having differential pressure control
US8215107B2 (en) 2010-10-08 2012-07-10 Husco International, Inc. Flow summation system for controlling a variable displacement hydraulic pump
CN103857926A (en) 2011-03-15 2014-06-11 胡斯可国际股份有限公司 Multiple function hydraulic system with a variable displacement pump and a hydrostatic pump-motor
US9003786B2 (en) * 2011-05-10 2015-04-14 Caterpillar Inc. Pressure limiting in hydraulic systems
DE112012003500B4 (en) * 2011-08-24 2017-07-27 Komatsu Ltd. Hydraulic drive system
US8899034B2 (en) * 2011-12-22 2014-12-02 Husco International, Inc. Hydraulic system with fluid flow summation control of a variable displacement pump and priority allocation of fluid flow
DE102012207422A1 (en) * 2012-05-04 2013-11-07 Robert Bosch Gmbh Hydraulic control system used for working machine e.g. mini excavators, has pressure reduction device for high load pressure, which is more adjusted in dependence of controlled volumetric flow of adjuster of the hydraulic pump
CN104603468B (en) * 2012-10-17 2017-07-11 株式会社日立建机Tierra The fluid pressure drive device of engineering machinery
US9145905B2 (en) 2013-03-15 2015-09-29 Oshkosh Corporation Independent load sensing for a vehicle hydraulic system
KR101486256B1 (en) 2013-04-30 2015-01-27 주식회사 유압사랑 Hydraulic system which is capable of controlling the actuator linearly
KR101487455B1 (en) 2013-05-08 2015-01-28 주식회사 유압사랑 Flow boost-up circuit for load sensing Hydraulic system
US10024445B2 (en) * 2014-06-25 2018-07-17 Parker-Hannifin Corporation Reverse flow check valve in hydraulic valve with series circuit
CN105840568B (en) * 2016-06-08 2018-04-13 山推工程机械股份有限公司 A kind of reducing mechanism extreme position internal stress method
CN106168234B (en) * 2016-07-13 2018-06-29 柳州柳工挖掘机有限公司 A kind of constant displacement pump variable delivery hydraulic system
JP7049213B2 (en) * 2018-08-10 2022-04-06 川崎重工業株式会社 Hydraulic circuit of construction machinery
US11815107B2 (en) * 2018-11-14 2023-11-14 Shimadzu Corporation Fluid control device
US11261582B1 (en) 2021-01-29 2022-03-01 Cnh Industrial America Llc System and method for controlling hydraulic fluid flow within a work vehicle using flow control valves
US11530524B2 (en) 2021-01-29 2022-12-20 Cnh Industrial America Llc System and method for controlling hydraulic fluid flow within a work vehicle
US11313388B1 (en) 2021-01-29 2022-04-26 Cnh Industrial America Llc System and method for controlling hydraulic fluid flow within a work vehicle
US11143211B1 (en) 2021-01-29 2021-10-12 Cnh Industrial America Llc System and method for controlling hydraulic fluid flow within a work vehicle
US12523014B2 (en) 2024-04-09 2026-01-13 Cnh Industrial America Llc System and method for controlling hydraulic fluid flow within a work vehicle
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EP0801231A1 (en) * 1996-04-10 1997-10-15 Commercial Intertech Corp. Control system with induced load isolation and relief
US5791142A (en) * 1997-03-27 1998-08-11 Husco International, Inc. Hydraulic control valve system with split pressure compensator
EP0877169A2 (en) * 1997-05-07 1998-11-11 Robert Bosch Gmbh Hydraulic control device for the load-independent control of a double acting actuator
EP0926349A2 (en) * 1997-12-17 1999-06-30 Husco International, Inc. Hydraulic control valve system with load sensing priority

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US5400816A (en) 1990-10-05 1995-03-28 Dana Corporation Pilot actuated override mechanism for holding valve
US5715865A (en) 1996-11-13 1998-02-10 Husco International, Inc. Pressure compensating hydraulic control valve system

Patent Citations (10)

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Publication number Priority date Publication date Assignee Title
US4739617A (en) * 1985-09-13 1988-04-26 Mannesmann Rexroth Gmbh Control arrangement for at least two hydraulic consumers fed by at least one pump
EP0411151A1 (en) * 1989-02-20 1991-02-06 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit for working machines
US5138837A (en) * 1990-02-26 1992-08-18 Mannesmann Rexroth Gmbh Load independent valve control for a plurality of hydraulic users
US5077972A (en) * 1990-07-03 1992-01-07 Caterpillar Inc. Load pressure duplicating circuit
DE4235709A1 (en) * 1992-10-22 1994-04-28 Linde Ag Hydrostatic drive system
WO1996037708A1 (en) * 1995-05-26 1996-11-28 Husco International, Inc. Pressure compensating hydraulic control system
EP0801231A1 (en) * 1996-04-10 1997-10-15 Commercial Intertech Corp. Control system with induced load isolation and relief
US5791142A (en) * 1997-03-27 1998-08-11 Husco International, Inc. Hydraulic control valve system with split pressure compensator
EP0877169A2 (en) * 1997-05-07 1998-11-11 Robert Bosch Gmbh Hydraulic control device for the load-independent control of a double acting actuator
EP0926349A2 (en) * 1997-12-17 1999-06-30 Husco International, Inc. Hydraulic control valve system with load sensing priority

Also Published As

Publication number Publication date
JP2004514093A (en) 2004-05-13
US6318079B1 (en) 2001-11-20
DE60105849D1 (en) 2004-10-28
CN1265101C (en) 2006-07-19
EP1354141B1 (en) 2004-09-22
WO2002012732A2 (en) 2002-02-14
EP1354141A2 (en) 2003-10-22
JP3916559B2 (en) 2007-05-16
BR0113127A (en) 2003-07-15
AU2001277166A1 (en) 2002-02-18
DE60105849T2 (en) 2005-10-13
BR0113127B1 (en) 2009-12-01
CN1496449A (en) 2004-05-12

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